android studio app development

1. The path of the NDK is not setError:Execution failed for task ‘:library:ndkBuild‘. > A problem occurred starting process ‘command ‘null/ndk-build‘‘Configure the installation path for the NDK.1) Set Environment variables: The new ANDROID_NDK_HOME key value is the Android NDK installation directory, added at the end of Path ;%ANDROID_NDK_HOME% .or 2) in the As Project structure settings, such as:2. The ndk-build command called does notError:execution

. (rounded).OK, the design of the database is this way, to finish this feeling in fact the design of the database is not difficult, as long as they can analyze the focus of what is done in the good.The app's core data is actually a record, which includes category, time, time, and so on field values.However, it is not possible to design only one table, because designing a table is not conducive to querying and results in data redundancy. As a result, the database is designed to look like what I h

://schemas.android.com/tools" to the top, mainly to avoid the name,icon,theme of multi-module and other conflicts2) The second module to remove application under the Android:name,android:icon,android:label, or after installation, there will be more than one icon on the desktop;3) The secondary module removes the activity's main filter　　　　 4. Conflict of resource filesJar package Conflict, check whether duplicate, in module all exist; Class name, file name, etc., repeat to modify one,

-party components, publish advertising revenue and so on. A series of work, I think all developers want to see the content, the author sacrificed his spare time to do such a thing, is very happy to get everyone's attention and support, in order to be worthy of attention to everyone, in order to spread sincerity, sharing, win the faith, to do these things is worth, the embodiment of value is the driving force of creation. The final project has been open source, you can go to the author's github d

Body I. Objectives Note that the called APK has been installed in the Android system. Previous Article: Android app development enhancement series (4) -- Android dynamic loading (on) -- loading classes in APK Not Installed Call another installed APK string, color value, imag

); Canvas.drawbitmap (bitmap,0,0,paint); if (bitmap.isrecycled ()) { bitmap.recycle ();}} }second, in the project activity, create and instantiate the custom MyView class and add it to the layout manager. As below, in the main active OnCreate () method, first get the frame layout manager, create the MyView object, and then add the touch listener event.Package Com.example.lhb.contentprovider1;import Android.app.activity;import Android.os.bundle;import Android.view.moti

Android Studio development-UI interface mixed control using XML and Java code package com.example.lhb.contentprovider1;import android.app.ActionBar;import android.app.Activity;import android.content.ContentResolver;import android.database.Cursor;import android.graphics.Color;import android.provider.ContactsContract;import android.support.v7.app.ActionBarA

Android.os.Bundle;Import Android.widget.CompoundButton;Import Android.widget.ImageView;Import Android.widget.ToggleButton;public class Mainactivity extends appcompatactivity{Private ToggleButton TB;Private ImageView img;@Overrideprotected void OnCreate (Bundle savedinstancestate) {Super.oncreate (savedinstancestate);Setcontentview (R.layout.activity_main);Initializing the controltb= (ToggleButton) Findviewbyid (R.id.togglebutton1);Img= (ImageView) Findviewbyid (r.id.image1);To set the listener

Get started with Android APP development This article describes how to get started with Android APP development, including SDK download, Development Environment setup, code writing, and

One: Create New Project1, 2, 3, 4,After creating the results, we found that you have created some demo pages and the data is already bound.Two: Resolve error 1, after the creation of the success, build found an error, as follows:This error is due to a workaround for the version issue, which modifies the version number to the following:And then you get an error:As a programmer, this small mistake to believe that it is difficult for you to solve yourself, it is headeritem use of the constructor is

ES program using C + + 31514.10.1 initializing OpenGL 31614.10.2 to create your own renderer 31614.11 Summary 31815th Android Network Programming 31915.1 WebView Control Usage 32015.2 Accessing resources using the HTTP protocol 321Use of 15.2.1 httpurlconnection 321Use of 15.2.2 httpclient 32415.3 Android Socket 32515.3.1 Android TCP Communication 32615.3.2

Android App development skill map, androidapp Operating System Windows/MacOSX/Linux Programming Language Java HTML/JS (Hybrid/Web App) C/C ++ (NDK) SQL (DB) Kotlin Development Tools IDE Android

we want to use is a very simple geometry, and the vector image occupies a very small amount of storage space.There is also a practical icon making tool website for Android Asset Studio. You can choose to make the app icon or the System icon, and after adjusting the parameters, you can download the icon to use locally.This article is part of a series of documents

need to interact with the app component Lists the instrumentation classes that provide analysis and other information while the app is running. These statements will only appear in the manifest file when the application is in the development and testing phase, and they will be deleted before the app sends a cloth.

, so just create one directly and then enter "0x2a45" to save. Re-testing will be no problem, such as:　　And that's the Adb_usb.ini of the file. Blue Note2 when connected to a computer, there is an option such as "built-in discs" such as:　　After selecting him, "My Computer" is like this, more than a "CD drive":　　After opening, there is an introduction to "Adb_usb.ini" in the "I:\USB Reference manual\ simplified \adb_ reference manual. txt":Second, the Windows XP Chinese environment1. Create or mo

Android NDK development (8)-uninstall the app listening itself, pop up user feedback survey, androidndk Reprinted please indicate the source:Http://blog.csdn.net/allen315410/article/details/42521251Analysis of listening and uninstalling scenarios and Principles 1. Scenario Analysis In my previous blog, I wrote about the NDK d